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Finding the Fourth Proportional to 268,362.84, 402,540.12 and 68,681.52

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Solution

The fourth proportional to 268,362.84, 402,540.12 and 68,681.52 is: 103,021.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,362.84 : 402,540.12 = 68,681.52 : x
  2. Step 2: Convert to fraction form
    268,362.84/402,540.12 = 68,681.52/x
  3. Step 3: Cross multiply
    268,362.84x = 402,540.12 × 68,681.52
  4. Step 4: Simplify right side
    268,362.84x = 27,647,067,302.58
  5. Step 5: Solve for x
    x = 27,647,067,302.58/268,362.84
  6. Step 6: Final answer
    x = 103,021.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.